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6 questions
The critical angle of a material is the angle of incidence for which the angle of refraction is:
0°
30°
45°
90°
180°
The principle underlying fiber optics is:
diffraction
dispersion
interference
polarization
total internal reflection
Light that has a wavelength of 500 nm in air has a wavelength 400 nm in a transparent material. What is the index of refraction of the material?
0.64
0.80
1.00
1.25
1.56
A beam of light passes from medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the respective indices of refraction (n1, n2, and n3)
n1 > n2 > n3
n1 > n3 > n2
n2 > n3 > n1
n2 > n1 > n3
n3 > n1 > n2
A laser is embedded in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:
1.4
1.5
2.1
3.5
5.0
A beam of light is directed toward point P on a boundary as shown to the right. Which segment best represents the refracted ray?
PA
PB
PC
PD
PE
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